1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Memory RAM not at correct speed

Discussion in 'Hardware' started by louist44, 3 Apr 2011.

  1. louist44

    louist44 New Member

    Joined:
    19 Jan 2011
    Posts:
    105
    Likes Received:
    0
    Noticed this since I build the rig around a week or two ago. I have 8GB (2GB x 4 kit) of corsair DDR3 that should be 1600, but it was running at 665. Went into the BIOS today and enabled to profile1 already saved, the BIOS then showed it at 1600 (the speed it should be) but when I used CPU-Z just now it states it is running at 798hz

    RAM is Corsair Memory XMS3 Classic 4GB DDR3 1600 MHz CAS 9-9-9-24, 1.5V
    I5 2500k
    Mobo is Gigabyte GA-P67A UD4 B3

    Any help on how to get it to run at 1600?
     
  2. Wira

    Wira Spoderman

    Joined:
    27 Jan 2011
    Posts:
    255
    Likes Received:
    5
    When you look at CPU Z it is actually double that speed as it is running in dual channel mode

    798x2 = 1596 (fail prolly)
     
  3. smc8788

    smc8788 ...at least I have chicken

    Joined:
    23 Apr 2009
    Posts:
    5,964
    Likes Received:
    272
    Nothing to do with dual channel; DDR = double data rate.
     
  4. Oggyb

    Oggyb Mutant

    Joined:
    15 Jun 2010
    Posts:
    347
    Likes Received:
    4
    I didn't expect that to be so profound. Why can't motherboards just report the expected speed.
     
  5. louist44

    louist44 New Member

    Joined:
    19 Jan 2011
    Posts:
    105
    Likes Received:
    0
    oh man I feel like an idiot now ... LOL.

    Thank you!
     
  6. Wira

    Wira Spoderman

    Joined:
    27 Jan 2011
    Posts:
    255
    Likes Received:
    5
    I stand corrected :)
     
  7. adam_bagpuss

    adam_bagpuss Have you tried turning it off/on ?

    Joined:
    24 Apr 2009
    Posts:
    4,228
    Likes Received:
    148
    some do some dont completely up to to the mobo manufacturer
     
  8. Splynncryth

    Splynncryth 0x665E3FF6,0x46CC,...

    Joined:
    31 Dec 2002
    Posts:
    1,510
    Likes Received:
    18
    DDR means the RAM triggers on the rising and falling edge of the clock. The clock frequency stays the same, but the RAM acts like there have been 2 clock ticks for every single tick effectively doubling the clock.
     

Share This Page